485 lines
15 KiB
JavaScript
485 lines
15 KiB
JavaScript
/******/ (() => { // webpackBootstrap
|
|
/******/ "use strict";
|
|
/******/ // The require scope
|
|
/******/ var __webpack_require__ = {};
|
|
/******/
|
|
/************************************************************************/
|
|
/******/ /* webpack/runtime/define property getters */
|
|
/******/ (() => {
|
|
/******/ // define getter functions for harmony exports
|
|
/******/ __webpack_require__.d = (exports, definition) => {
|
|
/******/ for(var key in definition) {
|
|
/******/ if(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {
|
|
/******/ Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });
|
|
/******/ }
|
|
/******/ }
|
|
/******/ };
|
|
/******/ })();
|
|
/******/
|
|
/******/ /* webpack/runtime/hasOwnProperty shorthand */
|
|
/******/ (() => {
|
|
/******/ __webpack_require__.o = (obj, prop) => (Object.prototype.hasOwnProperty.call(obj, prop))
|
|
/******/ })();
|
|
/******/
|
|
/******/ /* webpack/runtime/make namespace object */
|
|
/******/ (() => {
|
|
/******/ // define __esModule on exports
|
|
/******/ __webpack_require__.r = (exports) => {
|
|
/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
|
|
/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
|
|
/******/ }
|
|
/******/ Object.defineProperty(exports, '__esModule', { value: true });
|
|
/******/ };
|
|
/******/ })();
|
|
/******/
|
|
/************************************************************************/
|
|
var __webpack_exports__ = {};
|
|
__webpack_require__.r(__webpack_exports__);
|
|
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
|
|
/* harmony export */ parse: () => (/* binding */ parse)
|
|
/* harmony export */ });
|
|
/**
|
|
* @type {string}
|
|
*/
|
|
let document;
|
|
/**
|
|
* @type {number}
|
|
*/
|
|
let offset;
|
|
/**
|
|
* @type {ParsedBlock[]}
|
|
*/
|
|
let output;
|
|
/**
|
|
* @type {ParsedFrame[]}
|
|
*/
|
|
let stack;
|
|
|
|
/**
|
|
* @typedef {Object|null} Attributes
|
|
*/
|
|
|
|
/**
|
|
* @typedef {Object} ParsedBlock
|
|
* @property {string|null} blockName Block name.
|
|
* @property {Attributes} attrs Block attributes.
|
|
* @property {ParsedBlock[]} innerBlocks Inner blocks.
|
|
* @property {string} innerHTML Inner HTML.
|
|
* @property {Array<string|null>} innerContent Inner content.
|
|
*/
|
|
|
|
/**
|
|
* @typedef {Object} ParsedFrame
|
|
* @property {ParsedBlock} block Block.
|
|
* @property {number} tokenStart Token start.
|
|
* @property {number} tokenLength Token length.
|
|
* @property {number} prevOffset Previous offset.
|
|
* @property {number|null} leadingHtmlStart Leading HTML start.
|
|
*/
|
|
|
|
/**
|
|
* @typedef {'no-more-tokens'|'void-block'|'block-opener'|'block-closer'} TokenType
|
|
*/
|
|
|
|
/**
|
|
* @typedef {[TokenType, string, Attributes, number, number]} Token
|
|
*/
|
|
|
|
/**
|
|
* Matches block comment delimiters
|
|
*
|
|
* While most of this pattern is straightforward the attribute parsing
|
|
* incorporates a tricks to make sure we don't choke on specific input
|
|
*
|
|
* - since JavaScript has no possessive quantifier or atomic grouping
|
|
* we are emulating it with a trick
|
|
*
|
|
* we want a possessive quantifier or atomic group to prevent backtracking
|
|
* on the `}`s should we fail to match the remainder of the pattern
|
|
*
|
|
* we can emulate this with a positive lookahead and back reference
|
|
* (a++)*c === ((?=(a+))\1)*c
|
|
*
|
|
* let's examine an example:
|
|
* - /(a+)*c/.test('aaaaaaaaaaaaad') fails after over 49,000 steps
|
|
* - /(a++)*c/.test('aaaaaaaaaaaaad') fails after 85 steps
|
|
* - /(?>a+)*c/.test('aaaaaaaaaaaaad') fails after 126 steps
|
|
*
|
|
* this is because the possessive `++` and the atomic group `(?>)`
|
|
* tell the engine that all those `a`s belong together as a single group
|
|
* and so it won't split it up when stepping backwards to try and match
|
|
*
|
|
* if we use /((?=(a+))\1)*c/ then we get the same behavior as the atomic group
|
|
* or possessive and prevent the backtracking because the `a+` is matched but
|
|
* not captured. thus, we find the long string of `a`s and remember it, then
|
|
* reference it as a whole unit inside our pattern
|
|
*
|
|
* @see http://instanceof.me/post/52245507631/regex-emulate-atomic-grouping-with-lookahead
|
|
* @see http://blog.stevenlevithan.com/archives/mimic-atomic-groups
|
|
* @see https://javascript.info/regexp-infinite-backtracking-problem
|
|
*
|
|
* once browsers reliably support atomic grouping or possessive
|
|
* quantifiers natively we should remove this trick and simplify
|
|
*
|
|
* @type {RegExp}
|
|
*
|
|
* @since 3.8.0
|
|
* @since 4.6.1 added optimization to prevent backtracking on attribute parsing
|
|
*/
|
|
const tokenizer = /<!--\s+(\/)?wp:([a-z][a-z0-9_-]*\/)?([a-z][a-z0-9_-]*)\s+({(?:(?=([^}]+|}+(?=})|(?!}\s+\/?-->)[^])*)\5|[^]*?)}\s+)?(\/)?-->/g;
|
|
|
|
/**
|
|
* Constructs a block object.
|
|
*
|
|
* @param {string|null} blockName
|
|
* @param {Attributes} attrs
|
|
* @param {ParsedBlock[]} innerBlocks
|
|
* @param {string} innerHTML
|
|
* @param {string[]} innerContent
|
|
* @return {ParsedBlock} The block object.
|
|
*/
|
|
function Block(blockName, attrs, innerBlocks, innerHTML, innerContent) {
|
|
return {
|
|
blockName,
|
|
attrs,
|
|
innerBlocks,
|
|
innerHTML,
|
|
innerContent
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Constructs a freeform block object.
|
|
*
|
|
* @param {string} innerHTML
|
|
* @return {ParsedBlock} The freeform block object.
|
|
*/
|
|
function Freeform(innerHTML) {
|
|
return Block(null, {}, [], innerHTML, [innerHTML]);
|
|
}
|
|
|
|
/**
|
|
* Constructs a frame object.
|
|
*
|
|
* @param {ParsedBlock} block
|
|
* @param {number} tokenStart
|
|
* @param {number} tokenLength
|
|
* @param {number} prevOffset
|
|
* @param {number|null} leadingHtmlStart
|
|
* @return {ParsedFrame} The frame object.
|
|
*/
|
|
function Frame(block, tokenStart, tokenLength, prevOffset, leadingHtmlStart) {
|
|
return {
|
|
block,
|
|
tokenStart,
|
|
tokenLength,
|
|
prevOffset: prevOffset || tokenStart + tokenLength,
|
|
leadingHtmlStart
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Parser function, that converts input HTML into a block based structure.
|
|
*
|
|
* @param {string} doc The HTML document to parse.
|
|
*
|
|
* @example
|
|
* Input post:
|
|
* ```html
|
|
* <!-- wp:columns {"columns":3} -->
|
|
* <div class="wp-block-columns has-3-columns"><!-- wp:column -->
|
|
* <div class="wp-block-column"><!-- wp:paragraph -->
|
|
* <p>Left</p>
|
|
* <!-- /wp:paragraph --></div>
|
|
* <!-- /wp:column -->
|
|
*
|
|
* <!-- wp:column -->
|
|
* <div class="wp-block-column"><!-- wp:paragraph -->
|
|
* <p><strong>Middle</strong></p>
|
|
* <!-- /wp:paragraph --></div>
|
|
* <!-- /wp:column -->
|
|
*
|
|
* <!-- wp:column -->
|
|
* <div class="wp-block-column"></div>
|
|
* <!-- /wp:column --></div>
|
|
* <!-- /wp:columns -->
|
|
* ```
|
|
*
|
|
* Parsing code:
|
|
* ```js
|
|
* import { parse } from '@wordpress/block-serialization-default-parser';
|
|
*
|
|
* parse( post ) === [
|
|
* {
|
|
* blockName: "core/columns",
|
|
* attrs: {
|
|
* columns: 3
|
|
* },
|
|
* innerBlocks: [
|
|
* {
|
|
* blockName: "core/column",
|
|
* attrs: null,
|
|
* innerBlocks: [
|
|
* {
|
|
* blockName: "core/paragraph",
|
|
* attrs: null,
|
|
* innerBlocks: [],
|
|
* innerHTML: "\n<p>Left</p>\n"
|
|
* }
|
|
* ],
|
|
* innerHTML: '\n<div class="wp-block-column"></div>\n'
|
|
* },
|
|
* {
|
|
* blockName: "core/column",
|
|
* attrs: null,
|
|
* innerBlocks: [
|
|
* {
|
|
* blockName: "core/paragraph",
|
|
* attrs: null,
|
|
* innerBlocks: [],
|
|
* innerHTML: "\n<p><strong>Middle</strong></p>\n"
|
|
* }
|
|
* ],
|
|
* innerHTML: '\n<div class="wp-block-column"></div>\n'
|
|
* },
|
|
* {
|
|
* blockName: "core/column",
|
|
* attrs: null,
|
|
* innerBlocks: [],
|
|
* innerHTML: '\n<div class="wp-block-column"></div>\n'
|
|
* }
|
|
* ],
|
|
* innerHTML: '\n<div class="wp-block-columns has-3-columns">\n\n\n\n</div>\n'
|
|
* }
|
|
* ];
|
|
* ```
|
|
* @return {ParsedBlock[]} A block-based representation of the input HTML.
|
|
*/
|
|
const parse = doc => {
|
|
document = doc;
|
|
offset = 0;
|
|
output = [];
|
|
stack = [];
|
|
tokenizer.lastIndex = 0;
|
|
do {
|
|
// twiddle our thumbs
|
|
} while (proceed());
|
|
return output;
|
|
};
|
|
|
|
/**
|
|
* Parses the next token in the input document.
|
|
*
|
|
* @return {boolean} Returns true when there is more tokens to parse.
|
|
*/
|
|
function proceed() {
|
|
const stackDepth = stack.length;
|
|
const next = nextToken();
|
|
const [tokenType, blockName, attrs, startOffset, tokenLength] = next;
|
|
|
|
// We may have some HTML soup before the next block.
|
|
const leadingHtmlStart = startOffset > offset ? offset : null;
|
|
switch (tokenType) {
|
|
case 'no-more-tokens':
|
|
// If not in a block then flush output.
|
|
if (0 === stackDepth) {
|
|
addFreeform();
|
|
return false;
|
|
}
|
|
|
|
// Otherwise we have a problem
|
|
// This is an error
|
|
// we have options
|
|
// - treat it all as freeform text
|
|
// - assume an implicit closer (easiest when not nesting)
|
|
|
|
// For the easy case we'll assume an implicit closer.
|
|
if (1 === stackDepth) {
|
|
addBlockFromStack();
|
|
return false;
|
|
}
|
|
|
|
// For the nested case where it's more difficult we'll
|
|
// have to assume that multiple closers are missing
|
|
// and so we'll collapse the whole stack piecewise.
|
|
while (0 < stack.length) {
|
|
addBlockFromStack();
|
|
}
|
|
return false;
|
|
case 'void-block':
|
|
// easy case is if we stumbled upon a void block
|
|
// in the top-level of the document.
|
|
if (0 === stackDepth) {
|
|
if (null !== leadingHtmlStart) {
|
|
output.push(Freeform(document.substr(leadingHtmlStart, startOffset - leadingHtmlStart)));
|
|
}
|
|
output.push(Block(blockName, attrs, [], '', []));
|
|
offset = startOffset + tokenLength;
|
|
return true;
|
|
}
|
|
|
|
// Otherwise we found an inner block.
|
|
addInnerBlock(Block(blockName, attrs, [], '', []), startOffset, tokenLength);
|
|
offset = startOffset + tokenLength;
|
|
return true;
|
|
case 'block-opener':
|
|
// Track all newly-opened blocks on the stack.
|
|
stack.push(Frame(Block(blockName, attrs, [], '', []), startOffset, tokenLength, startOffset + tokenLength, leadingHtmlStart));
|
|
offset = startOffset + tokenLength;
|
|
return true;
|
|
case 'block-closer':
|
|
// If we're missing an opener we're in trouble
|
|
// This is an error.
|
|
if (0 === stackDepth) {
|
|
// We have options
|
|
// - assume an implicit opener
|
|
// - assume _this_ is the opener
|
|
// - give up and close out the document.
|
|
addFreeform();
|
|
return false;
|
|
}
|
|
|
|
// If we're not nesting then this is easy - close the block.
|
|
if (1 === stackDepth) {
|
|
addBlockFromStack(startOffset);
|
|
offset = startOffset + tokenLength;
|
|
return true;
|
|
}
|
|
|
|
// Otherwise we're nested and we have to close out the current
|
|
// block and add it as a innerBlock to the parent.
|
|
const stackTop = /** @type {ParsedFrame} */stack.pop();
|
|
const html = document.substr(stackTop.prevOffset, startOffset - stackTop.prevOffset);
|
|
stackTop.block.innerHTML += html;
|
|
stackTop.block.innerContent.push(html);
|
|
stackTop.prevOffset = startOffset + tokenLength;
|
|
addInnerBlock(stackTop.block, stackTop.tokenStart, stackTop.tokenLength, startOffset + tokenLength);
|
|
offset = startOffset + tokenLength;
|
|
return true;
|
|
default:
|
|
// This is an error.
|
|
addFreeform();
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parse JSON if valid, otherwise return null
|
|
*
|
|
* Note that JSON coming from the block comment
|
|
* delimiters is constrained to be an object
|
|
* and cannot be things like `true` or `null`
|
|
*
|
|
* @param {string} input JSON input string to parse
|
|
* @return {Object|null} parsed JSON if valid
|
|
*/
|
|
function parseJSON(input) {
|
|
try {
|
|
return JSON.parse(input);
|
|
} catch (e) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Finds the next token in the document.
|
|
*
|
|
* @return {Token} The next matched token.
|
|
*/
|
|
function nextToken() {
|
|
// Aye the magic
|
|
// we're using a single RegExp to tokenize the block comment delimiters
|
|
// we're also using a trick here because the only difference between a
|
|
// block opener and a block closer is the leading `/` before `wp:` (and
|
|
// a closer has no attributes). we can trap them both and process the
|
|
// match back in JavaScript to see which one it was.
|
|
const matches = tokenizer.exec(document);
|
|
|
|
// We have no more tokens.
|
|
if (null === matches) {
|
|
return ['no-more-tokens', '', null, 0, 0];
|
|
}
|
|
const startedAt = matches.index;
|
|
const [match, closerMatch, namespaceMatch, nameMatch, attrsMatch /* Internal/unused. */,, voidMatch] = matches;
|
|
const length = match.length;
|
|
const isCloser = !!closerMatch;
|
|
const isVoid = !!voidMatch;
|
|
const namespace = namespaceMatch || 'core/';
|
|
const name = namespace + nameMatch;
|
|
const hasAttrs = !!attrsMatch;
|
|
const attrs = hasAttrs ? parseJSON(attrsMatch) : {};
|
|
|
|
// This state isn't allowed
|
|
// This is an error.
|
|
if (isCloser && (isVoid || hasAttrs)) {
|
|
// We can ignore them since they don't hurt anything
|
|
// we may warn against this at some point or reject it.
|
|
}
|
|
if (isVoid) {
|
|
return ['void-block', name, attrs, startedAt, length];
|
|
}
|
|
if (isCloser) {
|
|
return ['block-closer', name, null, startedAt, length];
|
|
}
|
|
return ['block-opener', name, attrs, startedAt, length];
|
|
}
|
|
|
|
/**
|
|
* Adds a freeform block to the output.
|
|
*
|
|
* @param {number} [rawLength]
|
|
*/
|
|
function addFreeform(rawLength) {
|
|
const length = rawLength ? rawLength : document.length - offset;
|
|
if (0 === length) {
|
|
return;
|
|
}
|
|
output.push(Freeform(document.substr(offset, length)));
|
|
}
|
|
|
|
/**
|
|
* Adds inner block to the parent block.
|
|
*
|
|
* @param {ParsedBlock} block
|
|
* @param {number} tokenStart
|
|
* @param {number} tokenLength
|
|
* @param {number} [lastOffset]
|
|
*/
|
|
function addInnerBlock(block, tokenStart, tokenLength, lastOffset) {
|
|
const parent = stack[stack.length - 1];
|
|
parent.block.innerBlocks.push(block);
|
|
const html = document.substr(parent.prevOffset, tokenStart - parent.prevOffset);
|
|
if (html) {
|
|
parent.block.innerHTML += html;
|
|
parent.block.innerContent.push(html);
|
|
}
|
|
parent.block.innerContent.push(null);
|
|
parent.prevOffset = lastOffset ? lastOffset : tokenStart + tokenLength;
|
|
}
|
|
|
|
/**
|
|
* Adds block from the stack to the output.
|
|
*
|
|
* @param {number} [endOffset]
|
|
*/
|
|
function addBlockFromStack(endOffset) {
|
|
const {
|
|
block,
|
|
leadingHtmlStart,
|
|
prevOffset,
|
|
tokenStart
|
|
} = /** @type {ParsedFrame} */stack.pop();
|
|
const html = endOffset ? document.substr(prevOffset, endOffset - prevOffset) : document.substr(prevOffset);
|
|
if (html) {
|
|
block.innerHTML += html;
|
|
block.innerContent.push(html);
|
|
}
|
|
if (null !== leadingHtmlStart) {
|
|
output.push(Freeform(document.substr(leadingHtmlStart, tokenStart - leadingHtmlStart)));
|
|
}
|
|
output.push(block);
|
|
}
|
|
|
|
(window.wp = window.wp || {}).blockSerializationDefaultParser = __webpack_exports__;
|
|
/******/ })()
|
|
; |